2916113 Cannot open .tif files from email messages by using Windows-based applications in an Exchange Server 2013 environment

2592398 Email messages in the Sent Items folder have the same PR_INTERNET_MESSAGE_ID property in an Exchange Server 2010 environment

Notes:

Be advised that this CU includes a Managed Availability probe configuration that may result in the frequently restarting of the Microsoft Exchange Shared Cache Service in some environments. More information, see KB2971467.

Be advised of OAB architectural changes documented here. If you are affected, it is recommended to update CAS servers prior to Mailbox servers.

This Cumulative Update includes schema and AD changes, so make sure you run PrepareSchema / PrepareAD. After updating, the schema version will be 15300.

Note that Cumulative Updates can be installed directly, i.e. no need to install RTM or Service Packs prior to installing Cumulative Updates. Note that once installed, you can’t uninstall a Cumulative Update nor any of the installed Exchange server roles. The order of upgrading servers is irrelevant, unlike with previous generations of Exchange.

Finally, and I can’t emphasize this enough: For any Hotfix, Rollup, Service Pack or Cumulative Update, I’d recommend to thoroughly test this in a test and acceptance environment first, prior to implementing it in production. When you lack such facilities, hold out a week or two and monitor the comments on the release article or TechNet forum for any issues.

You can download Exchange 2013 Cumulative Update 5 here; UM Language Packs can be found here. More details about these changes, preparing Active Directory or installing this Cumulative Update can be found in the original announcement.

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About Michel de Rooij

I'm a Microsoft Office Apps and Services MVP, with focus on Exchange Server, Office 365 and with a PowerShell affection. I'm is a consultant, publisher of EighTwOne, published author, and speaker. You can find me on Twitter, LinkedIn, Facebook.

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About Michel de Rooij

Michel is an Office Apps & Services MVP with a PowerShell affection, and publisher of EighTwOne. You can find him on Twitter, LinkedIn, Facebook. Please use the Contact form for questions, or inquiries on consulting, support or other engagements.